Kids Pillowcase Toddler Pillow Case (20x30 Inch Cotton Pillowcase, superhero batman and robin / good night sleep tight ) (Superhero) Cotton Screen printed on 100% crisp white cotton pillowcase. The pillowcase design is based on an original watercolour painting by Little Pop Studio. Wash on cool setting at 30C and dry flat. It's not recommended that babies under 12 months sleep with a pillow. Machine washable, quick drying, and wrinkle resistant.